/*
 *  PPObject.m
 *  PigeonsFoundation
 *
 *  Created by Jacob Basham on 1/22/07.
 *  Copyright 2007, PaperPigeons.net
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions 
 *  are met:
 *  1. Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *	2. Redistributions in binary form must reproduce the above copyright 
 *	   notice, this list of conditions and the following disclaimer in 
 *	   the documentation and/or other materials provided with the distribution.
 *	3. Neither the name of PaperPigeons.net nor the names of its contributors 
 *	   may be used to endorse or promote products derived from this software 
 *	   without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 *	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
 *	FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
 *	COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
 *	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
 *	BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 *	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 *	CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 *	LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
 *	IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 *	POSSIBILITY OF SUCH DAMAGE.
 */

#import "PPObject.h"


@implementation PPObject

+ (id)object
{
	return [[self alloc] init];
}

+ (id)objectWithParent:(id)parent
{
	id this = [[self alloc] init];
	[this setParent:parent];
	return this;
}

- (id) init 
{
	self = [super init];
	if (self != nil) {
		_dictionary = [[NSMutableDictionary dictionary] retain];
	}
	return self;
}


- (id)valueForKey:(NSString *)key
{
	return [_dictionary valueForKey:key];
}

- (void)setValue:(id)value forKey:(NSString *)key
{
	[_dictionary setValue:value forKey:key];
}

- (void)addEntriesFromDictionary:(NSDictionary *)dictionary
{
	[_dictionary addEntriesFromDictionary:dictionary];
}

- (id)parent
{
	return _parent;
}

- (void)setParent:(id)parent
{
	[parent retain];
	[_parent release];
	_parent = parent;
}

- (void)dealloc
{
	[_parent release];
	[_dictionary release];
	[super dealloc];
}

@end

@implementation PPSmartObject

- (id)init
{
	if (self = [super init]) {
		_changes = [[NSMutableSet setWithCapacity:[_dictionary count]] retain];
	}
	return self;
}

- (void)setValue:(id)value forKey:(NSString *)key
{
	[_changes addObject:key];
	[super setValue:value forKey:key];
}

- (NSArray *)changedKeys
{
	return [_changes allObjects];
}

- (NSDictionary *)changedProperties
{
	NSString * key;
	NSArray * changes = [_changes allObjects];
	NSEnumerator * enumerator = [changes objectEnumerator];
	NSMutableDictionary * result = [NSMutableDictionary 
		dictionaryWithCapacity:[changes count]];
	
	while (key = [enumerator nextObject]) {
		[result setValue:[self valueForKey:key] forKey:key];
	}
	return result;
}


- (void)resetChangedProperties
{
	[_changes release];
	_changes = [[NSMutableSet setWithCapacity:[_dictionary count]] retain];
}

- (void)dealloc
{
	[_changes release];
	[super dealloc];
}

@end

